Aaboud, M.Aad, G.Abbott, B.Abdinov, O.Abeloos, B.Abidi, S. H.Adersberger, M.2022-12-252022-12-2520172470-00102470-0029https://doi.org/10.1103/PhysRevD.96.092008https://hdl.handle.net/20.500.11851/9604The analysis of the momentum difference between charged hadrons in high-energy proton-proton collisions is performed in order to study coherent particle production. The observed correlation pattern agrees with a model of a helical QCD string fragmenting into a chain of ground-state hadrons. A threshold momentum difference in the production of adjacent pairs of charged hadrons is observed, in agreement with model predictions. The presence of low-mass hadron chains also explains the emergence of charge-combination-dependent two-particle correlations commonly attributed to Bose-Einstein interference. The data sample consists of 190 mu b(-1) of minimum-bias events collected with proton-proton collisions at a center-of-mass energy root s = 7 TeV in the early low-luminosity data taking with the ATLAS detector at the LHC.eninfo:eu-repo/semantics/openAccessArticle2-s2.0-8503771550810.1103/PhysRevD.96.092008